Water Research and Technologies Centre (CERTE), Wastewater Treatment and Recycling Laboratory, Tunisia.
Bioresour Technol. 2010 Jul;101(14):5070-5. doi: 10.1016/j.biortech.2010.01.121. Epub 2010 Feb 18.
Sawdust, an available and renewable biomass, was investigated as a novel ammonium biosorbent. Biosorption occurred over a pH range of 6-10, reached an equilibrium state within only 20 min, and can be described by a pseudo-second-order model predicting a chemisorption process. Equilibrium data were very well represented by Langmuir isotherm and confirm monolayer coverage. FTIR analysis before and after biosorption of ammonium onto sawdust suggested that the main mechanisms involved in the removal of ammonium might be the ionic exchange and complexation. The use of sawdust presents an interesting option for both tertiary wastewater treatment (as a possible non-conventional biosorbent for the removal of ammonium), and waste recycling (as a fertilizer and compost).
木屑是一种可用且可再生的生物质，被研究为新型的铵生物吸附剂。生物吸附发生在 pH 值为 6-10 的范围内，仅在 20 分钟内即可达到平衡状态，可以用预测化学吸附过程的伪二级模型来描述。平衡数据非常好地符合朗缪尔等温线，并证实了单层覆盖。木屑吸附铵前后的 FTIR 分析表明，去除铵的主要机制可能是离子交换和络合。木屑的使用为三级废水处理（作为去除铵的一种可能的非常规生物吸附剂）和废物回收（作为肥料和堆肥）提供了一个有趣的选择。
